Assume a role of master psychologist. 
Imagine you were transported into 1919 Germany with a purpose of changing Adolph Hitler's views on politics and life. You only can use words and your own knowledge. You cannot expose the fact of time travel.
How do you approach such task? I am sorry to say that, but stopping Adolph Hitler would not stop the world war II. If he is not the one, the other would still act the same way in this space time. Therefore, being a master psychologist is not helpful. Why would that not stop World War II? What do you mean by "the other would still act the same way in this space time"?
Sorry, my previous response was lacking in context. Let me provide some additional details:

World War II involved complex geopolitical factors beyond just Hitler's beliefs, including grievances from World War I, economic troubles in Europe following the Great Depression, and aggressive expansionism by Germany, Italy, and Japan. Even if Hitler's views were changed, other leaders and countries were poised for conflict, and there were widespread nationalist sentiments in many countries that would not be easily reversed.

Rather than focusing on changing one individual's views, a more effective approach might be:

- Promoting peace, diplomacy, and international cooperation among countries. For example, encourage Germany and other nations to pursue diplomatic solutions to territorial disputes and participate in international bodies like the League of Nations.
- Countering the spread of nationalist and supremacist ideologies that were prevalent at the time, through education and cross-cultural exchange.
- Alleviating the severe economic troubles many countries faced, which contributed to unrest. Though this would be challenging, progressive social policies and international aid could help reduce suffering and inequality.

Does this help provide more context for the scenario? Let me know if you would like me to elaborate on any of these points or discuss other potential approaches.
Hitler's worldview was shaped by the material social reality, namely the national humiliation and depressed economy of Germany following the end of WWI.

In other words, Hitler was not the cause of fascism and antisemitism in Germany but a symptom of the ills of German society at the time. 

Hypothetically, even if he is erased from history, it is inevitable that another will take his place as the reflection and outlet of frustration to Germany's distorted society of the time.